Me – when someone told me that I really ought to have a “social media strategy”…

I don’t even know what that is. Do I post happy things on Tuesdays, but only on Facebook unless it’s about my dogs in which case I also post on Twitter? And then something about a book of mine every Thursday at 5pm, although absolutely not if it’s raining or I’ve had pasta for dinner the day before? I am sceptical…